公开(公告)号：JP2001184330A

公开(公告)日：2001-07-06

申请号：JP2000336638

申请日：2000-11-02

Applicant: MICROCHIP TECH INC

Inventor： HOFHINE PAUL ,  SMIT WILLEM ,  BINGHAM GREGORY C

IPC: G06F1/04 ,  G06F1/32 ,  G06F15/78

Abstract: PROBLEM TO BE SOLVED: To provide a system, a method and a device for maintaining a control and/or status state while keeping power in an integrated circuit(IC) microcontroller. SOLUTION: A microcontroller IC 100 is provided with a microcontroller core logic 102, an input/output port logic 106 suited to the storage of an output logic level, an interface logic 104 connected between the microcontroller core logic 102 and the input/output port logic 106, and a power switch 110 connected to the microcontroller core logic 102. When a power source 108 is connected to the microcontroller core logic 102, the microcontroller core logic 102 controls the output logic level of the input/output port logic 106 and when the power source 108 is disconnected from the microcontroller core logic 102, the output logic level of the input/output port logic 106 maintains the same state as just before the disconnection of the power source 108 from the microcontroller core logic 102.

公开(公告)号：WO0050994A3

公开(公告)日：2001-08-23

申请号：PCT/US0004603

申请日：2000-02-23

Applicant: MICROCHIP TECH INC

Inventor： SMIT WILLEM ,  HOFHINE PAUL ,  ROGERS CLARK

IPC: H01L23/544 ,  G06F11/00

CPC classification number: H01L23/544 ,  H01L2223/5444 ,  H01L2223/54473 ,  H01L2924/0002 ,  H01L2924/00

Abstract: An integrated circuit having a microcontroller, mask programmed read only memory, functions such as clock oscillator, analog-to-digital converter, timers, etc., where each may be adjusted with a digital input to a desired calibration value. The digital input resulting in the desired calibration value being stored in a programmable fuse array.